MXT Table of Contents MXT Table of Contents Chapter 1 Assembly ............................................................................... 2 Assembly Instructions ......................................................................................................................... 3 Chapter 2 Batteries ................................................................................. 4 Standard Battery Holder ...........................................................................................
Chapter 1 MXT Assembly Assembly WASHERS BETWEEN EACH LOOP EAR & CLEVIS Twist and insert each end of handle (provided) through top of shipping carton into second flap.
Chapter 1 MXT Assembly Assembly Instructions 1. Remove all parts from shipping carton and check the assembly page to make sure all parts are present. readjust clevis/lower rod length with the spring clip buttons so that the search coil can be held near the floor without requiring stooping over. 2. There are rubber washers between clevis/lower rod and loop ears. Use only nonmetallic washers, fiber bolt, and thumbnut to secure loop/search coil to clevis/lower rod. 7.
Chapter 2 MXT Batteries Batteries Using the Standard Battery Holder 1. Slide open the battery holder lid (decal side of battery holder) by applying gentle upward pressure on the tab of the door so that it unlocks. Slide the door away from the battery box exposing the cell positions. 2. Remove any old cells from the holder. Note the (+) and (-) positions of each cell and the (+) and (-) for each position marked inside the cell tray. Install new “AA” cells noting carefully the correct (+) and (-) positions.
Chapter 2 MXT Batteries Rechargeable Battery (Opt.) A rechargeable battery system is not standard equipment with your MXT, however, high quality systems are available. White's rechargeable battery #802-5211, and charger #509-0022 are recommended and offer quick charge and overnight charge options. Non-rechargeable batteries will start to drop in voltage as soon as they are put into use and then steadily diminish in voltage till they die.
Chapter 3 MXT Quick Start MXT Quick Start Trigger Switch has three positions; 1. Forward (Alternate Mode). 2. Center (Primary Search). 3. Squeeze and Held (Pinpoint). 2 1 3 5 4 TRAC Toggle Three position switch for setting Ground Mineral Tracking. Salt, Lock (hold), and Ground. 6 MODE Toggle Three position switch for setting operating mode. Coin & Jewelry, Relic, Prospecting. GAIN Control Turns the MXT ON/OFF and adjusts the signal strength of targets, ground, and electrical interference.
Quick Start Instructions Chapter 3 MXT Quick Start With the MXT properly assembled and the batteries installed, follow the instructions below to start finding treasures! 1 Set the Ground Balance Toggle to the Ground position. "▼" 2 Set the Trigger Switch (under the hand grip) to the center (Primary Search) position.
Chapter 4 MXT Display MXT Display Indication The MXT display and reference label below the display provide a wealth of information about the metal target. It is important, however, to understand the display information should only be consulted after a solid repeatable audio tone "beep" has been located. The MODE selection changes the type and content of the information shown by the display better suiting the MXT to the application, Coin & Jewelry, Relic, or Prospecting.
Half block indicating MXT is not certain but possible. Chapter 4 MXT Display 2. Blocks - A series of 16 blocks appear along the bottom portion of the display and line up with the indications on the reference label below the display. It is important to note these blocks are a different separate opinion compared to the VDI number and they may or may not agree. There is significance to how these blocks appear. A full block indicates the MXT is confident of indication.
Chapter 4 MXT Display Relic MODE; The Relic MODE also provides 5 different significant indications on the display. Mode toggle switch Center for Relics 1. VDI = number - As with the Coin and Jewelry mode the relic VDI (Visual Discrimination Indication) is a reference number dictated mostly by the metal targets exact alloy, size, and shape. And just like coins and jewelry, relics can present with similar VDI numbers for different objects because their makeup and electrical charasteristics are similar.
Chapter 4 MXT Display 4. Depth Indication - Trigger (on hand grip) squeezed and held, the display indicates the depth of coin sized metals. Just as in the Coin and Jewelry mode, Depth not only tells you how deep the target is but combined with the block reading and target label on the right side of the display it can indicate if the item is worth digging. A 6 - 12 Depth reading and any Block indication means dig. Shallower targets and a quarter or half size block suggests trash.
Chapter 4 MXT Display Prospecting MODE The Prospecting MODE changes the display information significantly. Mode toggle switch Down for Prospecting Gold in it's natural state can be any size and shape from very tiny pinhead size flakes to large placer gold nuggets as well as veins of various size in quartz rocks. The Prospecting MODE takes these facts into consideration and changes the display accordingly.
Chapter 4 MXT Display 3. GND - Indicates the phase (measurement) of the ground . This is useful in two different environments. A. Within a dry wash the gold will settle with the heavier materials (black sands). When searching you notice the ground phase is declining (lowering in number), generally you are working further away from the heavy black sand deposits. If you notice the ground phase is increasing, generally you are working toward (closer) to the heavier deposits.
Chapter 5 MXT Controls Controls Chapter 5 MXT Controls COIN & JEWELRY MODE *Trigger (on hand grip); MODE Center Position "Primary Searching" (traditional DISC control) . In other words with the Trigger on the hand grip in the center position, the DISC control works like most traditional metal detectors in that metal items below the DISC control setting are suppressed (quiet or broken) by the audio and metal items accepted by the DISC control setting produce a smoother solid audio beep.
Chapter 5 MXT Controls Chapter 5 MXT Controls RELIC MODE PROSPECTING MODE *Trigger (on hand grip) Center Position "Primary" "Two Tone ID" (disc accept high tone, reject low tone). In other words while operating in the Relic MODE, targets below the DISC control setting produce a beep lower in pitch, targets above the DISC control setting produce a beep higher in pitch. Two different tones, lower trash/rejects, higher good metals, accepts all based on the DISC control setting.
Chapter 5 MXT Controls Chapter 5 MXT Controls TRAC TOGGLE TRAC Toggle The TRAC toggle selects the type of ground mineral rejection (ground balance) and automatic tracking to ground mineral changes best suited to the specific area. Three different positions each for a specific ground condition (ground type) are provided. The Ground position is used for normal or typical ground conditions.
Chapter 5 MXT Controls Another example of when Lock would be used is if a particular mineralized rock or patch creates difficulties in searching an area. A hard rock mine for example with a low mineralized base rock and random high mineralized rocks or patches. Place the TRAC control in the Ground position and balance "pump the search coil" over a representative sample of the high mineral rock or patches. Then Lock in that ground rejection setting "place the TRAC control in the Lock position".
Chapter 5 MXT Controls Chapter 5 MXT Controls Gain Control/ON-OFF With the GAIN control, you turn the instrument on/ off and select the signal strength. You might expect increased signal strength to always find more at greater depths. However, high ground mineralization will "bounce" the signal back and mask good targets.
Chapter 5 MXT Controls Chapter 5 MXT Controls Gain Adjustment (continued) GAIN Control 5. In the Prospecting MODE the use of the SAT (variable self-adjusting threshold) control will help to maintain a smooth THRESHOLD "hum" particularly at higher GAIN settings and will be covered in a later section. 6. While using a steady slow search coil sweep speed, simultaneously advance GAIN towards "+3".
Chapter 5 MXT Controls Chapter 5 MXT Controls Dual Control While operating in the Coin & Jewelry or Relic MODEs the Dual control operates as a DISC (discrimination ) control. DISC (Discrimination) is used to adjust the level of audio rejection against trash metals. The "P" (Preset) just below NICKEL is recommended for most general purpose searching. In this position, the detector will provide a reject response to most iron and light foil and respond to most valuables including jewelry.
Chapter 5 MXT Controls Chapter 5 MXT Controls When a trash metal is being rejected in a Traditional DISC MODE, it will produce no beep at all or a suppressed beep that is shorter sounding typically inconsistent, a click or flutter-sounding beep. When a valuable metal is accepted it will produce a consistent, smooth, solid, and longer sounding beep. When operating below Threshold "silent search" very deep or small targets may appear as mere threshold level responses. 4.
Chapter 5 MXT Controls DUAL CONTROL, SAT When in the Prospecting MODE the DUAL CONTROL is used to adjust the level or speed of SAT (Self Adjusting Threshold). The Threshold or continuous faint hum heard during operation of the MXT can rise or disappear due to environmental interference or by interference of ground mineralization. This can be heard as chatter when excessive. Faster SAT speeds tend to calm this interference allowing for target sounds to be separated from ground noise.
Chapter 5 MXT Controls Chapter 5 MXT Controls Threshold Control The THRESHOLD control sets the loudness of the background "hum" or edge of sound. This background "hum" should normally be maintained during searching. In order to hear the tiniest and deepest targets the THRESHOLD "hum" should be set at the faintest audible level. It can be slightly scratchy, chatter or static like but it must be constant so as to not miss that small or deep targets.
Chapter 6 MXTSearching Chapter 5 MXT Controls Pinpointing Pinpoint Technique NOTE: Turn the detector 90° to the first side to side loop movement and repeat for "X"ing the center. Due to the wide scan nature of modern search coils it can be difficult to locate small targets under the physical center of the loop. Use an "X" marks the spot technique as shown in the diagram to identify the portion of ground the metal target is in.
Chapter 5 MXT Controls Chapter 6 MXT Searching Headphones The headphone jack on the GMX is located on the control box above the battery compartment. There is a dust cover on the headphone jack that needs to be removed before the stereo plug from the headphone is inserted. Replace it when headphones are not being used. Most users prefer high quality stereo headphones so White's has chosen to wire the headphone jack for stereo.
Chapter 6 MXTSearching Chapter 6 MXT Searching OPTIONAL method for Pull Tab/Jewelry separation: 10. Once a solid repeatable beep is located Field Use & Tuning Tips Coin & Jewelry MODE A. Push the Trigger forward and sweep the search coil over the target area. 1. If it still beeps it is likely a coin worth digging, procede with 2. 1. MODE to Coin & Jewelry 2. Trigger (on hand grip) center "primary Searching" position. 3. TRAC to Ground position. 4. GAIN to "P" position. 5.
Chapter 6 MXT Searching Coin & Jewelry MODE The Coin & Jewelry MODE provides good general purpose searching for a wide variety of targets and environments. From residential yards, parks and school grounds, farm fields, to beaches (for beaches use TRAC Salt), the Coin & Jewelry MODE should be used if there is any doubt at all regarding which of the three available MODEs is most practical for your current search.
Chapter 6 MXT Searching Chapter 5 GMT Searching Relic MODE 1. MODE to Relic. 11. Ferrous (iron) / Nonferrous (not iron) I.D. (Archeologist) or Mixed Mode. 2. Trigger (on hand grip) center "primary Searching" position. A. Lock Trigger (on hand grip) forward. 3. TRAC to Ground position. B. Set DISC control to "0". 4. GAIN to "P" position. C. Ferrous (iron) indicates with a lower pitched beep. 5. Threshold, adjust for slight hum (edge of sound). D.
Relic MODE The Relic MODE also provides good general purpose searching for a wide variety of targets and environments although it will require greater patience to use in populated areas compared to Coin & Jewelry as the Relic MODE is designed to locate a wider variety of metal alloys.
Chapter 6 MXT Searching Chapter 6 MXT Searching Prospecting MODE 1. MODE to Prospecting. 2. Trigger (on hand grip) center "primary Searching" position. 3. TRAC to Ground position. 4. GAIN to "P" position. 5. Threshold, adjust for slight hum (edge of sound). 6. DUAL CONTROL to SAT "P". 7. Pump the search coil on the ground to be searched until ground ceases to respond. 8. Move the coil just over the ground and listen for the distinct repeatable beep produced by a metal target.
Chapter 6 MXT Searching Chapter 6 MXT Searching PROSPECTING MODE The Prospecting MODE will require greater patience to use compared to the Coin & Jewelry and Relic MODEs. It is designed to locate all varieties of metal alloys and then give some indications as to if the metal being detected is made of ferrous (iron) or nonferrous (not iron).
Chapter 7 MXT Information Chapter 7 MXT Information Information Proper care I. Cleaning A. Both the coil and rod are waterproof and can be cleaned with fresh water and mild soap. The control box is not water proof and must be kept dry. Never lift a wet coil above the height of the control box as water can run down the inside of the rod damaging the electronics. A damp cotton cloth can be used to wipe off a dirty control box. II. Weather A.
Chapter 7 MXT Information Chapter 7 MXT Information Service White’s reputation has been built on quality products backed by quality service. Our Factory Authorized Service Centers are factory trained and equipped. They offer the same quality service as the factory. Service before and after the sale is the cornerstone of our customer relations.
Chapter 7 MXT Information Chapter 7 MXT Information Warranty If within two years (24 months) from the original date of purchase, your White's detector fails due to defects in either material or workmanship, White's will repair or replace at its option, all necessary parts without charge for parts or labor. Simply return the complete detector to the Dealer where you purchased it, or to your nearest Authorized Service Center.
Chapter 7 MXT Information Chapter 7 MXT Information Warranty Transfer If for any reason you should sell your MXT prior to the date the warranty expires, the remaining warranty is transferable. This transfer is authorized by calling 1-800-5476911, and getting an Authorization Number. Simply fill out the following information, including the Authorization Number, seal it in a stamped envelope, and send it to White's Electronics, 1011 Pleasant Valley Road, Sweet Home, Oregon 97386.
Chapter 7 MXT Information Chapter 7 MXT Information Video A Video cassette detailing the proper use of the MXT is available. This video explains how to use the MXT in the field, as well as explaining the many varied options. Intended for English speaking persons, it is recorded on VHS format. White's recommends this video cassette as a valuable learning aid for both beginners, and experi enced metal detector users. For more information, please contact your Dealer.
